死因(しいん)

しいん
noun
cause of death
1. cause of death
The reason or medical condition that led to a person's death. Used in medical, legal, and news contexts.
死因(しいん)は心不全(しんふぜん)だった。
The cause of death was heart failure.
警察(けいさつ)が死因(しいん)を調(しら)べている。
The police are investigating the cause of death.
解剖(かいぼう)の結果(けっか)、死因(しいん)は急性(きゅうせい)の中毒(ちゅうどく)であることが判明(はんめい)した。
As a result of the autopsy, it was determined that the cause of death was acute poisoning.

Composed of 死(し) (death) + 因(いん) (cause). A formal term used in medical reports, legal documents, and news articles.

COMMON COLLOCATIONS:

  • 死因(しいん)を調(しら)べる: to investigate the cause of death
  • 死因(しいん)を特定(とくてい)する: to determine the cause of death
  • 死因(しいん)不明(ふめい): cause of death unknown
  • 直接(ちょくせつ)死因(しいん): direct cause of death
  • 死因(しいん)は～だ: the cause of death was 〜

COMMON CAUSES (AS USED IN NEWS):

  • 心不全(しんふぜん): heart failure
  • 脳卒中(のうそっちゅう): stroke
  • 急性(きゅうせい)中毒(ちゅうどく): acute poisoning
  • 老衰(ろうすい): old age

RELATED:

  • 死亡(しぼう): death (formal, factual)
  • 死去(しきょ): passing away (respectful)
  • 検死(けんし): autopsy, postmortem examination

Related Words

Related: 死去(しきょ) (death, passing)
general
Added 2026.2.24 15:41 · Revised 2026.4.3 14:49
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